diff --git a/core-java/src/main/java/com/baeldung/mercator/EllipticalMercator.java b/algorithms/src/main/java/com/baeldung/algorithms/mercator/EllipticalMercator.java
similarity index 95%
rename from core-java/src/main/java/com/baeldung/mercator/EllipticalMercator.java
rename to algorithms/src/main/java/com/baeldung/algorithms/mercator/EllipticalMercator.java
index bb9ebb0e58..8c3e4c554f 100644
--- a/core-java/src/main/java/com/baeldung/mercator/EllipticalMercator.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/mercator/EllipticalMercator.java
@@ -1,4 +1,4 @@
-package com.baeldung.mercator;
+package com.baeldung.algorithms.mercator;
 
 class EllipticalMercator extends Mercator {
     @Override
diff --git a/core-java/src/main/java/com/baeldung/mercator/Mercator.java b/algorithms/src/main/java/com/baeldung/algorithms/mercator/Mercator.java
similarity index 84%
rename from core-java/src/main/java/com/baeldung/mercator/Mercator.java
rename to algorithms/src/main/java/com/baeldung/algorithms/mercator/Mercator.java
index 3f50884f6b..b289b1839d 100644
--- a/core-java/src/main/java/com/baeldung/mercator/Mercator.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/mercator/Mercator.java
@@ -1,4 +1,4 @@
-package com.baeldung.mercator;
+package com.baeldung.algorithms.mercator;
 
 abstract class Mercator {
     final static double RADIUS_MAJOR = 6378137.0;
diff --git a/core-java/src/main/java/com/baeldung/mercator/SphericalMercator.java b/algorithms/src/main/java/com/baeldung/algorithms/mercator/SphericalMercator.java
similarity index 88%
rename from core-java/src/main/java/com/baeldung/mercator/SphericalMercator.java
rename to algorithms/src/main/java/com/baeldung/algorithms/mercator/SphericalMercator.java
index 6cc405b3b0..1be976d82e 100644
--- a/core-java/src/main/java/com/baeldung/mercator/SphericalMercator.java
+++ b/algorithms/src/main/java/com/baeldung/algorithms/mercator/SphericalMercator.java
@@ -1,14 +1,14 @@
-package com.baeldung.mercator;
+package com.baeldung.algorithms.mercator;
 
 public class SphericalMercator extends  Mercator {
 
     @Override
-    double yAxisProjection(double input) {
+    double xAxisProjection(double input) {
         return Math.toRadians(input) * RADIUS_MAJOR;
     }
 
     @Override
-    double xAxisProjection(double input) {
+    double yAxisProjection(double input) {
         return Math.log(Math.tan(Math.PI / 4 + Math.toRadians(input) / 2)) * RADIUS_MAJOR;
     }
 }
diff --git a/core-java/src/test/java/com/baeldung/mercator/EllipticalMercatorUnitTest.java b/algorithms/src/test/java/com/baeldung/algorithms/mercator/EllipticalMercatorUnitTest.java
similarity index 94%
rename from core-java/src/test/java/com/baeldung/mercator/EllipticalMercatorUnitTest.java
rename to algorithms/src/test/java/com/baeldung/algorithms/mercator/EllipticalMercatorUnitTest.java
index 0088cc451c..13618e80a7 100644
--- a/core-java/src/test/java/com/baeldung/mercator/EllipticalMercatorUnitTest.java
+++ b/algorithms/src/test/java/com/baeldung/algorithms/mercator/EllipticalMercatorUnitTest.java
@@ -1,4 +1,4 @@
-package com.baeldung.mercator;
+package com.baeldung.algorithms.mercator;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/core-java/src/test/java/com/baeldung/mercator/SphericalMercatorUnitTest.java b/algorithms/src/test/java/com/baeldung/algorithms/mercator/SphericalMercatorUnitTest.java
similarity index 82%
rename from core-java/src/test/java/com/baeldung/mercator/SphericalMercatorUnitTest.java
rename to algorithms/src/test/java/com/baeldung/algorithms/mercator/SphericalMercatorUnitTest.java
index 2e5ebe53cb..f1152441b8 100644
--- a/core-java/src/test/java/com/baeldung/mercator/SphericalMercatorUnitTest.java
+++ b/algorithms/src/test/java/com/baeldung/algorithms/mercator/SphericalMercatorUnitTest.java
@@ -1,4 +1,4 @@
-package com.baeldung.mercator;
+package com.baeldung.algorithms.mercator;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -13,13 +13,13 @@ public class SphericalMercatorUnitTest {
     public void giventThatTheInputIs22_whenXAxisProjectionIsCalled_thenTheResultIsTheCorrectOne() {
         Mercator mercator = new SphericalMercator();
         double result = mercator.xAxisProjection(22);
-        assertEquals(result, 2511525.234845713);
+        assertEquals(result, 2449028.7974520186);
     }
 
     @Test
     public void giventThatTheInputIs44_whenYAxisProjectionIsCalled_thenTheResultIsTheCorrectOne() {
         Mercator mercator = new SphericalMercator();
         double result = mercator.yAxisProjection(44);
-        assertEquals(result, 4898057.594904037);
+        assertEquals(result, 5465442.183322753);
     }
 }